I'm a novice recorder and was using my Zoom H1 for the first time yesterday. I can't find the first meeting I recorded with it (omg) but I can find another longer meeting. I had pushed the record button and saw the red light, but even after plugging the thing into my computer, that first file is nowhere. I didn't delete it - where might it be?
Contrary to what Utopia said, you need to press the record button only once on the zoom H1. If you saw the red light (and the counter running), it was recording.
I have had a similar issue once with my H1, where after a series of recordings in recorder-unfriendly conditions (taped to the back of a car), one file became corrupt and the next one was missing. I tried one of those drive rescue programs to see if the data was still on the memory card, but to no avail.
I'm guessing it happend because somehow the device switched off before it could write the latest recording to the card.